Reversible pipe bender with detachable side abutment member



y 1948- V J. J. DOU CETTE 2,444,56

REVERSIBLE PIPE BENDER WITH DETACHABLE SIDE ABUTMENT MEMBER Filed NOV. 15, 1945 2 Sheets-Sheet l July 1,948.

J. J. DOUCETTE 2,4445% REVERSIBLE PIPE BENDER WITH DETACHABLE Filed Nov. 15-,' 1945 SIDE ABUTMEN'I MEMBER 2 Sheets-Sheet 2 Lick/7 d." floucefie,

Patented July 6, l948 UNITED STATES. :PATENT flFFl-CE r REVERSIBLE PIPEIBENDER. WITH "DETACH- ABIiE SIDE ABUTMENTMEMBER John. J. Doucette, Malden, Mass. Application November 15, 1945,"Seria'l No. 628,696

3 Claims. (01. 153-40 This invention relates topipe or rod bending machi-nes, andhas for its general object to provide a'pipe or rod bending machine of simple,

practical, rugged construction which is easy to operate and thoroughly reliable and effi-cient in "use.

The machine is of the type comprising a lever 'arm, a wheel, means carried by the lever arm for clamping a pipe or rod against the wheel, and an abutment for holding the pipe or rod against outward movement relative to the wheel, whereby the pipe or rod iswrapped or bent about =-the wheel in response toswinging of the lever arm, and in this connection particular objects 0f the invention are: toconstruct the machine "so that it may readily and easily be mounted in and outwardly relative to the wheel to adapt the machine *to operate upon pipes or rods of-difierent diameters.

With the foregoing and other objects in view,

will become more fully apparent as the nature of the invention is better understood, the same consists in a'pipe or rod bending machine embodying the .novel features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings and defined in the appended claims.

In the accompanying drawings, wherein like characters of reference denote corresponding "parts in related views:

Fig. -1 is a top plan view of a machine constructed in accordance with one practical embo'di1nent of the invention.

Fig. 2 is a side elevation of the machine shown "in Fig. .1.

"Fig. 3 is-a transverse section on the line 3-3 of Fig. 1.

Fig. 4 is a top plan view of a machine constructed in accordance with another practical embodiment of the invention; and

Fig. 5 is a section on the line 5-5 of Fig. 4.

"Referring to the drawings in detail, first to the form of the invention shown in Figs. 1 to 3, I0 designates the bed of the machine which may be in the form of a substantially rectangular plate of suitable length, width and thickness, and H designates a lever arm having one end portion thereof superimposed upon one end portion of said bed and suitably pivoted thereto, as indicated at l2, whereby the lever arm as a whole is swingable ina planedirectly above and paralle'l :to said bed. 1 r

Superimposed upon'the'lever arm H and suitably mounted in axial .alinement with ,the tpivnt H 2 thereof, is .a. .wheel 13, while carried :by said lever arm, adjacent to said wheel, is suitable meanaldesignated generally as M, 'tor'clamping a :pipe, rod or the like 15 against said wheel.

The-pivot ii 'for the lever arm all may comprise .a. pin :carried :by andri'sing from the bed 4 0, and the wheel l3 may be mounted upon-said pin. 0n the otherhandthe means 14 may comprise a :block it to :engagethe :outer side ofapipe or rod I15 idisposed against .the wheel I23, a screw .Ilil engaged with said "block, and .ablug .18 rising .irom the lever ar-m .H and having said screw threaded .therethrough. 'In any event, when a pipe-rod or the like is :clamped against the wheel *3 land :thelever. arm @I |.-is swung, thepipe, rod or the like will be constrained .to move with said fiilever arm. In this connection it will "be noted that the bed to is provided with means to .hold the pipe, rod -:or:the like against swinging .outwardlyrelative to the wheel [3 when the :lever .arm :l'il is swung. It isalpparent'therefore, that swinging of said lever .arm is effective .-:to wrap the ipipe rod or the likeabout the wheel-l3 and thus impart to the pipe, rod or .a like a :bend corresponding to the peripheral curvature of the wheel 4J3.

Ehe holdingmeansxcarried by the bed, lllmay comprise .a detachable abutment l9 rising. from said :lied and a member '20 in the formv of a bar of suitable length engageable at .its inner side with zthe pipe, rod or the like and .slida'bly engaged .at its outer side with said abutment J9.

Ilhus, as the pipe, rod or :the like is advanced longitudinaily over the bed in responsive to wrap rpingiof ithesame :aboutthe wheel L3 as thelever arm ill is swung, the .member 20 is free "to ;,|II1'0V,B' longitudinally therewith. Consequently,

the pipe, rod or the like-is not marred as might result from sliding of the same against .the member 5120 if the. flatter were stationary.

Elie-faces oi the wheel I3, the block 1 Band the cmemherv 2.0 which engage the pipe, rod or the like ;:may ib;e,,and..preferably -are,. grooved to accommodate the pipe, rod or the like, and in this connection it will be noted that these elements may be interchangeable with other eiements of the form but oi different sizes to accommodate pipes, rods or the like of difierent diameters and to impart different bends thereto.

Preferably an abutment l9 anda related slide member is provided at each side of the bed l0 to front edge for swinging movement thereover in a plane parallel thereto, a wheel superimposed upon said lever arm, means mounting said wheel in axial alinement with the pivoted axis of said lever arm, means carried by said lever arm for clamping a pipe or rod against the edge of said wheel, a vertically disposed detachable abutment member mounted upon said base along each of the side edges of the latter and tangentially with respect to said wheel, and a movable bearing means 7 carried by the base adjacent each of the inner 4 and 5 form' or the invention, the construction is essentially the same as the Figures 1 to 3 construction, except that it includes provision for adjusting the abutment l9 and the related slide member 20' toward and away from the wheel 43' to betteradapt the machine to operate upon pipes, rods or the like of different diameters. abutment I9, which may be in the form of an angle member as shown, rests upon the bed l and is shiftable inwardly and outwardly relative thereto and is held against outward movement from any given position thereof by screws 22 which are threaded in lugs 23 fixed to and rising from the bed lll'. Thus, by adjusting said screws, the lateral spacing of the abutment l9 from the wheel l3 may be varied so that pipes, rods or the like of different diameters may be accomm'odated between the slide member 20' and the wheels 13'.

In the use of the machine, the lever arm II or H is swung to a position as indicated by dotted lines in Figure 4, the pipe, rod or the like to be bent is disposed between the slide member 20 or 20' and the wheel l3 or l3, and is clamped against the wheel by the clamping means M or M. The lever arm H or N then is swung to Wrap the pipe, rod or the like about the wheel 13 or it, thereby imparting to it a bend corresponding to the circular or other peripheral contour of said wheel. As the bend is produced, the portion of the pipe, rod or the like which is engaged with the member 20 or 20' is advanced and said member is advanced therewith by sliding with respect to the abutment 19 or 19'.

Figure illustrates that the slidable member 2U' may have upper and lower pipe, rod or the like accommodating channels 24 of diiferent sizes located so that said member may be reversed, top for bottom, to position either channel for use.

From the foregoing description considered in connection with the accompanying drawings, it is believed that the construction and operation of the present machine will be clearly understood and its advantages appreciated. It is desired to point out however, that while only certain specific structural embodiments of the invention have been illustrated and described, the same is readily capable of specifically different structural embodiments within its spirit and scope as defined in the claims.

- I claim:

l. A pipe or rod bending machine comprising, a substantially rectangular flat base having front, rear and side edges, a lever arm superimposed upon said base and pivoted thereto adjacent said faces of each of said abutment members and engageable therewith, each of said bearing means being mounted for selective engagement with the outer face of a pipe or rod clamped to said wheel whereby said bearing means will move with a In other words, the

pipe or rod contacting therewith as the latter is bent in response to swinging movement of the lever away from the selected abutment and bearing means.

2. A pipe or rod bending machine comprising a substantially rectangular flat base having front, rear and side edges, a lever arm superimposed upon said base and pivoted thereto adjacent said front edge for swinging movement thereover in a plane parallel thereto, a wheel superimposed upon said lever arm, means mounting said wheel in axial alinement with the pivoted axis of said lever arm, means carried by said lever arm for clamping a pipe or rod against the peripheral face of said wheel, a vertically disposed detachable abutment formed for selective engagement along either of the side edges of said base and tangentially with respect to said wheel, and a movable bearing element mounted upon said base and slidably engaging the inner face of said abutment, whereby said bearing element will be engaged by a pipe or rod clamped to said wheel and will move therewith in response to bending movement of the lever in a direction away from said abutment and bearing element.

3. A pipe or rod bending machine in accordance with claim 2, wherein the side edges of the base and the detachable abutment are provided REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Germany May 15, 1934 

